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- /* Special .init and .fini section support.
- Copyright (C) 1997, 2001 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- In addition to the permissions in the GNU Lesser General Public
- License, the Free Software Foundation gives you unlimited
- permission to link the compiled version of this file with other
- programs, and to distribute those programs without any restriction
- coming from the use of this file. (The Lesser General Public
- License restrictions do apply in other respects; for example, they
- cover modification of the file, and distribution when not linked
- into another program.)
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- /* Define an ELF note identifying the operating-system ABI that the
- executable was created for. The ELF note information identifies a
- particular OS or coordinated development effort within which the
- ELF header's e_machine value plus (for dynamically linked programs)
- the PT_INTERP dynamic linker name and DT_NEEDED shared library
- names fully identify the runtime environment required by an
- executable.
- The general format of ELF notes is as follows.
- Offsets and lengths are bytes or (parenthetical references) to the
- values in other fields.
- offset length contents
- 0 4 length of name
- 4 4 length of data
- 8 4 note type
- 12 (0) vendor name
- - null-terminated ASCII string, padded to 4-byte alignment
- 12+(0) (4) note data,
- The GNU project and cooperating development efforts (including the
- Linux community) use note type 1 and a vendor name string of "GNU"
- for a note descriptor that indicates ABI requirements. The note data
- is four 32-bit words. The first of these is an operating system
- number (0=Linux, 1=Hurd, 2=Solaris, ...) and the remaining three
- identify the earliest release of that OS that supports this ABI.
- See abi-tags (top level) for details. */
- #include <features.h>
- #include <abi-tag.h> /* OS-specific ABI tag value */
-
- /* The linker (GNU ld 2.8 and later) recognizes an allocated section whose
- name begins with `.note' and creates a PT_NOTE program header entry
- pointing at it. */
- #ifdef __HAVE_ELF__
- .section ".note.ABI-tag", "a"
- #else
- .section .note
- #endif
- .align 4
- .long 1f - 0f /* name length */
- .long 3f - 2f /* data length */
- .long 1 /* note type */
- 0: .asciz "GNU" /* vendor name */
- 1: .align 4
- 2: .long __ABI_TAG_OS /* note data: the ABI tag */
- .long __ABI_TAG_VERSION
- 3: .align 4 /* pad out section */
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